I've never heard of the HP Digital Slide Rule. Do you have photos and/or more details?
I am familiar with the first HP desktop calculator (9100A) that inspired their first handheld calculator (HP-35). The HP-35 was a ten-digit calculator that was released in 1972 for $395. -----Original Message----- From: Van Snyder via cctalk <cctalk@classiccmp.org> Sent: Tuesday, April 16, 2024 9:34 AM To: General Discussion: On-Topic and Off-Topic Posts <cctalk@classiccmp.org>; ED SHARPE <couryho...@aol.com> Cc: Adrian Godwin <artgod...@gmail.com>; Van Snyder <van.sny...@sbcglobal.net> Subject: [cctalk] Re: Bomar 901b My wife found in my stuff. Is this as scarce at it seems?s,? On Tue, 2024-04-16 at 12:38 +0100, Adrian Godwin via cctalk wrote: > 901B is the first pocket calculator I remember - I don't know if there > were earlier ones. The first one I remember is the HP Digital Slide Rule, about 1965. Six digits. $600.
